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    <body><span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span> changed
          <a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED FIXED - BUG: sleeping function called from invalid context at ./include/linux/percpu-rwsem.h:34"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=103964">bug 103964</a>
          <br>
             <table border="1" cellspacing="0" cellpadding="8">
          <tr>
            <th>What</th>
            <th>Removed</th>
            <th>Added</th>
          </tr>

         <tr>
           <td style="text-align:right;">Resolution</td>
           <td>---
           </td>
           <td>FIXED
           </td>
         </tr>

         <tr>
           <td style="text-align:right;">Status</td>
           <td>NEEDINFO
           </td>
           <td>RESOLVED
           </td>
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      <p>
        <div>
            <b><a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED FIXED - BUG: sleeping function called from invalid context at ./include/linux/percpu-rwsem.h:34"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=103964#c11">Comment # 11</a>
              on <a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED FIXED - BUG: sleeping function called from invalid context at ./include/linux/percpu-rwsem.h:34"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=103964">bug 103964</a>
              from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
        <pre>commit b5e0a9418e09a7b6df1728a26832c7c34aa1adf8
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date:   Fri Dec 1 00:15:36 2017 +0000

    drm/i915: Set fake_vma.size as well as fake_vma.node.size for capture

    When capturing the bo, we allocate an error object with an array of
    min(vma->size, vma->node.size) pages, plus a bit for compression overhead.
    However, when creating the fake vma to describe the bo, only one of the
    sizes was filled in, resulting in a too small array. Through my and CI
    testing, this was sufficient for the mostly empty NULL context as
    it compressed well (or the out-of-bounds access simply didn't cause an
    issue). However, in real workloads on Cannonlake, we were overflowing
    that array and causing havoc with the random memory corruption.

    Reported-by: Rafael Antognolli <<a href="mailto:rafael.antognolli@intel.com">rafael.antognolli@intel.com</a>>
    Bugzilla: <a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED FIXED - BUG: sleeping function called from invalid context at ./include/linux/percpu-rwsem.h:34"
   href="show_bug.cgi?id=103964">https://bugs.freedesktop.org/show_bug.cgi?id=103964</a>
    Fixes: 4e90a6e22272 ("drm/i915: Record default HW state in the GPU error
state")
    Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
    Cc: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
    Cc: Mika Kuoppala <<a href="mailto:mika.kuoppala@linux.intel.com">mika.kuoppala@linux.intel.com</a>>
    Cc: Joonas Lahtinen <<a href="mailto:joonas.lahtinen@linux.intel.com">joonas.lahtinen@linux.intel.com</a>>
    Tested-by: Rodrigo Vivi <<a href="mailto:rodrigo.vivi@gmail.com">rodrigo.vivi@gmail.com</a>>
    Link:
<a href="https://patchwork.freedesktop.org/patch/msgid/20171201001536.13941-1-chris@chris-wilson.co.uk">https://patchwork.freedesktop.org/patch/msgid/20171201001536.13941-1-chris@chris-wilson.co.uk</a>
    Reviewed-by: Mika Kuoppala <<a href="mailto:mika.kuoppala@linux.intel.com">mika.kuoppala@linux.intel.com</a>></pre>
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